String Wound Filter Cartridges

String Wound Filter Cartridges are made of a single strand of yarn, which is precision wound around a perforated center core in a controlled diamond pattern. The Filter Factory’s unique manufacturing process produces a cartridge with a graded density structure which decreases in size from the outside surface to the center core. The Filter Factory string wound filter cartridges are known for their long life and consistent removal rating.

The string wound filter cartridges are available in 14 standard fibers, 15 particle removal ratings, 5 different center core materials, and unlimited lengths from 9.75″ through 40″. With this wide range of possible cartridges, The Filter Factory can provide with the right cartridge for your application.

String Wound Filter Cartridge Features and Specifications

  • The Filter Factory’s string wound elements are manufactured in-house on custom, high-speed, computer-controlled machines for consistent thread spacing
  • Customized patterns and spacing offered to adapt to your specialized applications
  • Ink and paint elements have a 3-stage multi-pattern winding process offering true depth loading and prevents core blinding
  • With 14 media selections and 15-micron ratings, we can produce the elements you require
  • All end cap configurations available to fit your existing housing
  • Standard diameters are 2.5 and 4.5 inches
  • Standard lengths from 9.75 to 40 inches
  • FDA Title 21 Compliant Media


Learn more about our String Wound Products

FF-FGH String Wound Heat Purified Fiberglass Filter

FF-FFG String Wound Fiberglass Filter

FF-FBC String Wound FDA Bleached Cotton Filter

FF-FNC String Wound Natural Cotton Filters

FF-FFP String Wound FDA Polypropylene Filter

FF-FEP String Wound Industrial Polypropylene Filter

Download our String Wound Filter Cartridge Datasheet


Lead Time:

Quantity (Boxes): 1 – 2 (>2)
Est. Time (Days): 21 (Negotiable)


Packaging & Delivery:

“30 filters per box (2.5 in O.D. x 5-10 in length)
15 filters per box (2.5 in O.D. x 20-40 in length)

“”BB”” Big Blue: 12 filters per box (4 in. O.D. x 10 in length)
“”BB”” Big Blue: 6 filters per box (4 in. O.D. x 20 in length)



Place of Origin: USA
Unit: 2 boxes
Required Time per Supply: 3 weeks

Call us today at (928) 627-5500 to learn more, or fill out our contact form and someone will get back to you.